EP1320284A3 - High efficiency driver for color light emitting diodes (LED) - Google Patents

High efficiency driver for color light emitting diodes (LED) Download PDF

Info

Publication number
EP1320284A3
EP1320284A3 EP02027332A EP02027332A EP1320284A3 EP 1320284 A3 EP1320284 A3 EP 1320284A3 EP 02027332 A EP02027332 A EP 02027332A EP 02027332 A EP02027332 A EP 02027332A EP 1320284 A3 EP1320284 A3 EP 1320284A3
Authority
EP
European Patent Office
Prior art keywords
led
light emitting
emitting diodes
color light
leds
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP02027332A
Other languages
German (de)
French (fr)
Other versions
EP1320284A2 (en
EP1320284B1 (en
Inventor
Franki Ngai Kit Poon
Man Hay Pong
Joe Chui Pong Liu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
University of Hong Kong HKU
Original Assignee
University of Hong Kong HKU
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by University of Hong Kong HKU filed Critical University of Hong Kong HKU
Publication of EP1320284A2 publication Critical patent/EP1320284A2/en
Publication of EP1320284A3 publication Critical patent/EP1320284A3/en
Application granted granted Critical
Publication of EP1320284B1 publication Critical patent/EP1320284B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/20—Controlling the colour of the light
    • H05B45/24—Controlling the colour of the light using electrical feedback from LEDs or from LED modules
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • H05B45/3725—Switched mode power supply [SMPS]
    • H05B45/382—Switched mode power supply [SMPS] with galvanic isolation between input and output
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • H05B45/3725—Switched mode power supply [SMPS]
    • H05B45/385—Switched mode power supply [SMPS] using flyback topology
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/40—Details of LED load circuits
    • H05B45/44—Details of LED load circuits with an active control inside an LED matrix
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S362/00—Illumination
    • Y10S362/80—Light emitting diode

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Led Devices (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

An efficient power driver for color light emitting diodes (LED) is disclosed for driving multiple LEDs for producing different desired colors. Such LED combinations comprising LEDs with different primary colors are suitable for implementing pixels in displaying a digitized image. This disclosed invention provides switching power conversion embodiments such that a single apparatus drives different color LEDs. Furthermore, the disclosed invention provides configurations with and without input to output isolation while enabling control of the current through each LED, for instance by an inductor or operating condition.
EP02027332A 2001-12-14 2002-12-07 High efficiency driver for color light emitting diodes (LED) Expired - Lifetime EP1320284B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US17661 2001-12-14
US10/017,661 US7178971B2 (en) 2001-12-14 2001-12-14 High efficiency driver for color light emitting diodes (LED)

Publications (3)

Publication Number Publication Date
EP1320284A2 EP1320284A2 (en) 2003-06-18
EP1320284A3 true EP1320284A3 (en) 2005-01-19
EP1320284B1 EP1320284B1 (en) 2007-07-25

Family

ID=21783850

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02027332A Expired - Lifetime EP1320284B1 (en) 2001-12-14 2002-12-07 High efficiency driver for color light emitting diodes (LED)

Country Status (6)

Country Link
US (2) US7178971B2 (en)
EP (1) EP1320284B1 (en)
CN (1) CN1287642C (en)
DE (1) DE60221343T2 (en)
HK (1) HK1054485B (en)
TW (1) TWI278812B (en)

Families Citing this family (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2003235489A1 (en) * 2002-05-08 2003-11-11 Tom Mcneil High efficiency solid-state light source and methods of use and manufacture
US7479741B2 (en) * 2003-07-16 2009-01-20 Dsp Group Switzerland Ag Method and device for supplying power to LEDs
CN1879453B (en) * 2003-11-13 2010-06-23 皇家飞利浦电子股份有限公司 Resonant power LED control circuit with brightness and colour control
CA2559718C (en) * 2004-03-15 2012-05-22 Color Kinetics Incorporated Power control methods and apparatus
US7633463B2 (en) 2004-04-30 2009-12-15 Analog Devices, Inc. Method and IC driver for series connected R, G, B LEDs
ATE507703T1 (en) * 2004-06-03 2011-05-15 Koninkl Philips Electronics Nv LIGHT DIODES DRIVEN WITH AC CURRENT
GB2420613A (en) * 2004-08-27 2006-05-31 Bespoke Lighting Ltd Lighting
DE102004047681B4 (en) * 2004-09-30 2009-01-02 Osram Opto Semiconductors Gmbh LED circuit arrangement with a diode rectifier
WO2006056960A1 (en) * 2004-11-29 2006-06-01 Koninklijke Philips Electronics N.V. Method and a driver circuit for led operation
DE102005030114A1 (en) * 2005-06-28 2007-01-18 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Circuit arrangement for operating electrical lamp e.g. fluorescent lamp, and light emitting diode, has lamps-supply unit with light emitting diode-supply unit, which is designed to supply light emitting diode with energy
US7438442B2 (en) * 2005-10-12 2008-10-21 Lg Display Co., Ltd. Light emitting package, backlight unit and liquid crystal display device including the same
DK2016804T3 (en) 2006-05-02 2011-10-10 Koninkl Philips Electronics Nv LED Circuit, Arrangement and Decor
DE602007012918D1 (en) 2006-10-06 2011-04-14 Philips Intellectual Property POWER SUPPLY DEVICE FOR LIGHT ELEMENTS AND METHOD FOR SUPPLYING POWER TO THE LIGHT ELEMENTS
RU2427983C2 (en) 2006-10-06 2011-08-27 Конинклейке Филипс Электроникс Н.В. Switched array of light elements and method of operation
EP2084941B1 (en) 2006-10-06 2010-04-21 Philips Intellectual Property & Standards GmbH Light element array with controllable current sources and method of operation
US7741825B2 (en) * 2006-11-02 2010-06-22 Infineon Technologies Ag Power supply circuit with temperature-dependent drive signal
US20080231204A1 (en) * 2007-03-19 2008-09-25 Praiswater Michael R Light emitting diode assembly replacement for fluorescent lamp
US7772782B2 (en) * 2007-12-05 2010-08-10 Leadtrend Technology Corp. Light emitting diode (LED) driving device
TWM346239U (en) * 2008-07-16 2008-12-01 Gigno Technology Co Ltd Driving device of lighting apparatus
US8242704B2 (en) 2008-09-09 2012-08-14 Point Somee Limited Liability Company Apparatus, method and system for providing power to solid state lighting
WO2010041183A2 (en) * 2008-10-10 2010-04-15 Koninklijke Philips Electronics, N.V. Methods and apparatus for controlling multiple light sources via a single regulator circuit to provide variable color and/or color temperature light
KR101721426B1 (en) 2008-10-21 2017-03-30 코닌클리케 필립스 엔.브이. Light emitting diode driving apparatus
US8427063B2 (en) * 2009-07-29 2013-04-23 Vektrex Electronic Systems, Inc. Multicolor LED sequencer
TWI538553B (en) 2009-08-25 2016-06-11 皇家飛利浦電子股份有限公司 Multichannel lighting unit and driver for supplying current to light sources in multichannel lighting unit
TWI416989B (en) * 2009-09-18 2013-11-21 Richtek Technology Corp Circuit and method for controlling light emitting device, and integrated circuit therefor
US8872439B2 (en) 2010-04-30 2014-10-28 Texas Instruments Incorporated System and methods for providing equal currents to current driven loads
DE102010038787A1 (en) * 2010-08-02 2012-02-02 Osram Ag Circuit arrangement and method for operating at least a first and at least one second Led
US20120119676A1 (en) * 2010-11-15 2012-05-17 Power Integrations, Inc. Flyback power converter with divided energy transfer element
US20120146536A1 (en) * 2010-12-13 2012-06-14 Nate Mullen Led lighting system
US8729832B2 (en) 2011-05-15 2014-05-20 Lighting Science Group Corporation Programmable luminaire system
US9681108B2 (en) 2011-05-15 2017-06-13 Lighting Science Group Corporation Occupancy sensor and associated methods
US8674608B2 (en) 2011-05-15 2014-03-18 Lighting Science Group Corporation Configurable environmental condition sensing luminaire, system and associated methods
US9648284B2 (en) 2011-05-15 2017-05-09 Lighting Science Group Corporation Occupancy sensor and associated methods
US9185783B2 (en) 2011-05-15 2015-11-10 Lighting Science Group Corporation Wireless pairing system and associated methods
TWI442811B (en) 2011-05-27 2014-06-21 Ind Tech Res Inst Light source driving device
AT511990B1 (en) * 2011-09-27 2013-06-15 Fachhochschule Technikum Wien ACTUATOR FOR CONTROLLING LIGHT-EMITTING DIODES
US8515289B2 (en) 2011-11-21 2013-08-20 Environmental Light Technologies Corp. Wavelength sensing lighting system and associated methods for national security application
US8492995B2 (en) 2011-10-07 2013-07-23 Environmental Light Technologies Corp. Wavelength sensing lighting system and associated methods
US9402294B2 (en) 2012-05-08 2016-07-26 Lighting Science Group Corporation Self-calibrating multi-directional security luminaire and associated methods
US8680457B2 (en) 2012-05-07 2014-03-25 Lighting Science Group Corporation Motion detection system and associated methods having at least one LED of second set of LEDs to vary its voltage
US9006987B2 (en) 2012-05-07 2015-04-14 Lighting Science Group, Inc. Wall-mountable luminaire and associated systems and methods
US9174067B2 (en) 2012-10-15 2015-11-03 Biological Illumination, Llc System for treating light treatable conditions and associated methods
US9303825B2 (en) 2013-03-05 2016-04-05 Lighting Science Group, Corporation High bay luminaire
JP6145821B2 (en) * 2013-09-13 2017-06-14 パナソニックＩｐマネジメント株式会社 Illumination light source and illumination device
TWI563216B (en) * 2014-08-22 2016-12-21 Lite On Electronics Guangzhou Light-emitting device
US9900945B1 (en) * 2015-05-01 2018-02-20 Cooper Technologies Company Color temperature control
TWI666972B (en) * 2017-09-29 2019-07-21 美商科斯莫燈飾公司 Lighting circuit with time control function
EP3592112A1 (en) * 2018-07-02 2020-01-08 Signify Holding B.V. A lighting circuit and control method
WO2019219518A1 (en) 2018-05-15 2019-11-21 Signify Holding B.V. A lighting circuit and control method
TWI667941B (en) * 2018-07-16 2019-08-01 林再福 High-efficiency color LED lamp shared drive

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6053090A (en) * 1983-09-02 1985-03-26 Mayumi Watanabe Lighting system for led
JPS61196586A (en) * 1985-02-26 1986-08-30 Mitsubishi Electric Corp Light-emitting diode driving circuit
EP0950342A1 (en) * 1997-01-03 1999-10-20 Telefonaktiebolaget Lm Ericsson Driver circuit and method of operating the same

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4436960A (en) * 1982-01-11 1984-03-13 Bell Telephone Laboratories, Incorporated Telephone ringing signal generator
US4496939A (en) * 1982-06-04 1985-01-29 Eastman Kodak Company Power indicator apparatus for a DC to DC flyback converter
US6069412A (en) * 1993-03-29 2000-05-30 Powerware Corporation Power factor corrected UPS with improved connection of battery to neutral
FR2762721B1 (en) * 1997-04-29 1999-06-11 Sagem METHOD FOR CHARGING A BATTERY AND BATTERY CHARGER FOR IMPLEMENTING THE METHOD
JPH1169814A (en) * 1997-08-14 1999-03-09 Toshiba Corp Power supply units and control circuit for parallel operations thereof
US6072280A (en) * 1998-08-28 2000-06-06 Fiber Optic Designs, Inc. Led light string employing series-parallel block coupling
FI106770B (en) * 1999-01-22 2001-03-30 Nokia Mobile Phones Ltd Illuminating electronic device and illumination method
JP3494403B2 (en) * 1999-01-27 2004-02-09 Ｔｄｋ株式会社 Switching power supply
US6371637B1 (en) * 1999-02-26 2002-04-16 Radiantz, Inc. Compact, flexible, LED array
US6243276B1 (en) * 1999-05-07 2001-06-05 S-B Power Tool Company Power supply system for battery operated devices
US6577072B2 (en) * 1999-12-14 2003-06-10 Takion Co., Ltd. Power supply and LED lamp device
JP3317950B2 (en) * 2000-01-24 2002-08-26 甲府日本電気株式会社 Active clamp forward converter
US6388393B1 (en) * 2000-03-16 2002-05-14 Avionic Instruments Inc. Ballasts for operating light emitting diodes in AC circuits
US6333861B1 (en) * 2000-06-06 2001-12-25 Astec International Limited Low loss snubber and transformer reset circuit for forward converters
US6369525B1 (en) * 2000-11-21 2002-04-09 Philips Electronics North America White light-emitting-diode lamp driver based on multiple output converter with output current mode control
US6888529B2 (en) * 2000-12-12 2005-05-03 Koninklijke Philips Electronics N.V. Control and drive circuit arrangement for illumination performance enhancement with LED light sources
US6359392B1 (en) * 2001-01-04 2002-03-19 Motorola, Inc. High efficiency LED driver
US6577512B2 (en) * 2001-05-25 2003-06-10 Koninklijke Philips Electronics N.V. Power supply for LEDs
US6646895B1 (en) * 2001-10-25 2003-11-11 Tyco Electronics Power Systems, Inc. Bias supply circuit and a switching power supply employing the same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6053090A (en) * 1983-09-02 1985-03-26 Mayumi Watanabe Lighting system for led
JPS61196586A (en) * 1985-02-26 1986-08-30 Mitsubishi Electric Corp Light-emitting diode driving circuit
EP0950342A1 (en) * 1997-01-03 1999-10-20 Telefonaktiebolaget Lm Ericsson Driver circuit and method of operating the same

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
"DRIVER FOR SUPPLYING A PULSATING CURRENT TO LIGHT EMITTING DIODES", RESEARCH DISCLOSURE, KENNETH MASON PUBLICATIONS, HAMPSHIRE, GB, no. 378, 1 October 1995 (1995-10-01), pages 651, XP000549126, ISSN: 0374-4353 *
PATENT ABSTRACTS OF JAPAN vol. 0091, no. 81 (E - 331) 26 July 1985 (1985-07-26) *
PATENT ABSTRACTS OF JAPAN vol. 0110, no. 27 (E - 474) 27 January 1987 (1987-01-27) *

Also Published As

Publication number Publication date
US20030112229A1 (en) 2003-06-19
CN1426270A (en) 2003-06-25
US20070040514A1 (en) 2007-02-22
DE60221343D1 (en) 2007-09-06
US7567040B2 (en) 2009-07-28
HK1054485A1 (en) 2003-11-28
EP1320284A2 (en) 2003-06-18
EP1320284B1 (en) 2007-07-25
US7178971B2 (en) 2007-02-20
DE60221343T2 (en) 2008-04-17
TW200411614A (en) 2004-07-01
HK1054485B (en) 2007-07-13
CN1287642C (en) 2006-11-29
TWI278812B (en) 2007-04-11

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